Statalist


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

st: RE: RE: Poisson Rates


From   "Lachenbruch, Peter" <[email protected]>
To   <[email protected]>
Subject   st: RE: RE: Poisson Rates
Date   Tue, 13 Jan 2009 14:26:20 -0800

If you look at number of injuries divided by hours worked, any values
will be truncated by Poisson regression and be incorrect.  If you use
regress, you may be OK, but the distribution is probably wrong.

Tony

Peter A. Lachenbruch
Department of Public Health
Oregon State University
Corvallis, OR 97330
Phone: 541-737-3832
FAX: 541-737-4001


-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of
[email protected]
Sent: Tuesday, January 13, 2009 12:33 AM
To: [email protected]
Cc: Lachenbruch, Peter
Subject: st: RE: Poisson Rates

How does the interpretation of using exposure() compare with the  
outcome of dividing the number of predicted injuries by the number of  
hours worked for each experience group?
My goal is to plot the results of rate on the y-axis and experience on  
the x-axis with curves representing the various levels of age.
Thanks,
Jason
*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



© Copyright 1996–2024 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index